Calculator: calculate the annual simple flat interest rate to negociate in order to earn a certain simple flat rate interest on the principal (money starting amount) by duration and additional transaction fees

Calculator: annual simple interest rate to negociate to earn a certain interest

Annual simple flat interest rate = (Simple flat rate interest × Number of days in a year) ÷ (Principal × Duration in days)

Latest calculated annual simple flat interest rates

Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 1 units (Dollar, Euro, Pound, etc.), from date: Oct 13, 2018, to date: Nov 13, 2018, namely for a period of 31 days if the commission fee (withdrawal or payment) is 0%.Dec 12 12:00 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 15,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 16,125 units (Dollar, Euro, Pound, etc.), from date: May 13, 2018, to date: May 13, 2019, namely for a period of 365 days (12 Months) if the commission fee (withdrawal or payment) is 0%.Dec 12 11:38 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 30,236 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 25,971.46 units (Dollar, Euro, Pound, etc.), from date: Jul 31, 2009, to date: Nov 30, 2014, namely for a period of 1,948 days (64 Months without 1 Days) if the commission fee (withdrawal or payment) is 0%.Dec 12 11:16 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 4,120 units (Dollar, Euro, Pound, etc.), from date: Mar 25, 2017, to date: Dec 25, 2017, namely for a period of 275 days (9 Months) if the commission fee (withdrawal or payment) is 0%.Dec 12 11:14 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 5,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 7,000 units (Dollar, Euro, Pound, etc.), from date: Mar 25, 2017, to date: Apr 25, 2027, namely for a period of 3,683 days (121 Months) if the commission fee (withdrawal or payment) is 0%.Dec 12 09:50 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 100,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 10 units (Dollar, Euro, Pound, etc.), from date: Dec 31, 2017, to date: Dec 31, 2018, namely for a period of 365 days (12 Months) if the commission fee (withdrawal or payment) is 0%.Dec 12 09:45 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 1,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 5 units (Dollar, Euro, Pound, etc.), from date: Mar 30, 2017, to date: Oct 30, 2017, namely for a period of 214 days (7 Months) if the commission fee (withdrawal or payment) is 0%.Dec 12 09:44 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 20,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 833 units (Dollar, Euro, Pound, etc.), from date: Jul 26, 2017, to date: Jul 26, 2019, namely for a period of 730 days (24 Months) if the commission fee (withdrawal or payment) is 0%.Dec 12 08:47 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 20,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 6,300 units (Dollar, Euro, Pound, etc.), from date: Jul 26, 2017, to date: Jul 26, 2019, namely for a period of 730 days (24 Months) if the commission fee (withdrawal or payment) is 0%.Dec 12 08:32 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 15,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 16,125 units (Dollar, Euro, Pound, etc.), from date: May 13, 2018, to date: May 13, 2019, namely for a period of 365 days (12 Months) if the commission fee (withdrawal or payment) is 0%.Dec 12 08:21 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 5,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 300 units (Dollar, Euro, Pound, etc.), from date: Nov 21, 2018, to date: Dec 21, 2019, namely for a period of 395 days (13 Months) if the commission fee (withdrawal or payment) is 0%.Dec 12 08:18 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 100,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 10 units (Dollar, Euro, Pound, etc.), from date: Dec 31, 2017, to date: Dec 31, 2018, namely for a period of 365 days (12 Months) if the commission fee (withdrawal or payment) is 0%.Dec 12 07:36 UTC (GMT)
Calculate the simple flat interest rate on the invested amount (principal, initial starting amount of money lent, deposited or borrowed), of 4,000 units (Dollar, Euro, Pound, etc.), in order to produce an interest of 200 units (Dollar, Euro, Pound, etc.), from date: Nov 21, 2018, to date: Dec 21, 2018, namely for a period of 30 days if the commission fee (withdrawal or payment) is 0%.Dec 12 07:27 UTC (GMT)
All annual simple flat interest rates calculated by users


How to calculate / negociate the simple flat interest rate of a principal - initial starting amount of money lent, deposited or borrowed, in order to collect or pay a certain simple flat rate interest by the duration and any additional transaction fees (withdrawal, payment in advance, etc.).

Annual simple flat rate interest formula:

  • I = S × p% × n

  • I = n years simple interest charged
  • S = initial amount (principal)
  • p% = annual simple flat interest rate (percentage of the principal, charged as interest)
  • n = number of years of the lending or borrowing the money
  • Formula of the simple flat interest rate applied on the principal - initial starting amount of money lent, deposited or borrowed, in order to earn a simple flat annual rate:

  • p% = I ÷ (S × n)

Examples of how to calculate the simple flat interest rate on the principal amount in order to earn a certain simple flat rate interest:

  • 1) What is the simple flat interest rate of the principal S = 20,000 units that has to be lent, deposited or borrowed, for a period of n = 5 years, if the simple flat rate interest collected or paid D = 3,500 units?
    Answer:
    p% = I ÷ (S × n) = 3,500 ÷ (20,000 × 5) = 3,500 ÷ 100,000 = 3.5 ÷ 100 = 3.5%
  • 2) What is the simple flat interest rate of a principal S = 5,000 units, that has to be lent, deposited or borrowed, for a period of n = 3 years, if the simple flat rate interest collected or paid D = 300 units?
    Answer:
    p% = I ÷ (S × n) = 300 ÷ (5,000 × 3) = 300 ÷ 15,000 = 3 ÷ 150 = 1 ÷ 50 = 2 ÷ 100 = 2%

Annual simple flat interest rate formula calculated for a period of n years:

  • Simple flat interest rate, p% = I ÷ (S × n)
  • Interest, I = S × p% × n
  • Principal, S = I ÷ (p% × n)
  • Number of years of the period of the deposit, lending or borrowing, n = I ÷ (S × p%)

Formula of the simple flat interest rate of the principal for an annual simple flat rate interest calculated for a period of m months:

  • Simple flat interest rate, p% = (12 × I) ÷ (S × m)
  • Interest, I = (S × p% × m) ÷ 12
  • Principal, S = (12 × I) ÷ (p% × m)
  • Number of months of the period, m = (12 × I) ÷ (S × p%)

Formula of the simple flat interest rate of a principal for an annual simple flat rate interest calculated for a period of d days:

  • Simple flat interest rate, p% = (365 × I) ÷ (S × d)
  • Interest, I = (S × p% × d) ÷ 365
  • Principal, S = (365 × I) ÷ (p% × d)
  • Number of days of the period, d = (365 × I) ÷ (S × p%)

More examples of how the simple flat interest rate of a principal for a simple flat rate interest formula works:

  • 1) Calculate the simple flat interest rate of the initial amount S = 400 units that would generate a simple flat rate interest I = 6.67 units in m = 5 months.
    Answer:
    p% = (12 × I) ÷ (S × m) = (12 × 6.67) ÷ (400 × 5) = (12 × 6.67) ÷ 2,000 = 80 ÷ 2,000 = 4%
  • 2) Calculate the simple flat interest rate of the initial amount S = 400 units that would generate a simple flat rate interest I = 7.5 units in m = 5 months.
    Answer:
    p% = (12 × I) ÷ (S × m) = (12 × 7.5) ÷ (400 × 5) = 90 ÷ 2,000 = 4.5%.